The calculated distance (air line) between Ar Rābiyah and Ḩawallī is approximately 6 miles respectively 10 kilometers.
By car or train, the actual journey to Ḩawallī is certainly longer, as only the direct route (as the crow flies) between Ar Rābiyah and Ḩawallī has been calculated here.
Air line (approximately)
10 kilometers
5 nautical miles